Hansel thought he could memorize his way home, he didn't need a trail to help him. Well, let's go through this quick then. Kids were left to make a fire as the parents went to work getting wood (but really were going to abandon Hansel and Gretel). Night comes and Hansel tried to recall the way home and instead got him and his sister lost. Hansel tripped and the stones fell out of his pocket. He landed headfirst on the stones and died quickly, Gretel cried loudly which attracted a bear that mauled her.
Moral of the story is to plan ahead. Confidence in your abilities could be your downfall.